The aurora borealis could take another bow in Colorado Wednesday evening, according to forecasters. On Monday night, the strongest display of Northern Lights in more than a decade thrilled sky watchers and a repeat is possible, according to the Boulder-based Space Weather Prediction Center. "The coronal mass ejection that erupted June 22 in conjunction with the R2 solar flare has been modeled and arrival is expected" about 5 p.m.